Color interlayer film for laminated glass, and laminated glass

ABSTRACT

The present invention provides a color interlayer film for laminated glass, comprised of a resin composition containing a polyvinyl acetal resin, a coloring agent, and an infrared ray shielding agent and characterized in that the resin composition further contains a phosphoric acid ester compound at a ratio of 5 parts by weight or less to 100 parts by weight of the polyvinyl acetal resin, and also provides laminated glass using said interlayer film. The interlayer film of the present invention has characteristics that the film is excellent in the infrared ray shielding property and resistant against whitening in the interlayer film part even in the case of absorbing moisture while keeping the basic properties as an interlayer film for laminated glass.

FIELD OF THE INVENTION

The present invention relates to a color interlayer film for laminatedglass, and laminated glass using said interlayer film for laminatedglass.

BACKGROUND ART

Conventionally, laminated glass obtained by inserting an interlayer filmof a polyvinyl butyral resin between at least two glass plates isexcellent in transparency, weather resistance, adhesion strength, andpenetration resistance and further provided with a capability ofpreventing scattering of glass debris as basic properties, andaccordingly has been used widely for window glass of automobiles andbuildings.

To heighten the beauty of laminated glass, laminated glass using a colorinterlayer film comprised of a polyvinyl acetal resin containing acoloring agent has also been used widely.

However, there is a fear that the color interlayer film may turn itscolor to white if the film is put in highly humid atmosphere, resultingin discoloration of its original color into white. Further, the colorinterlayer film is desired to have high transparency and there arises aproblem that if the color interlayer film has a light ray transmittanceexceeding 50%, even slight whitening discoloration tends to benoticeable. Therefore, it has been desired to develop a color interlayerfilm for laminated glass capable of preventing whitening of the colorinterlayer film and maintaining the original color of the colorinterlayer film, and laminated glass using the interlayer film.

DISCLOSURE OF THE INVENTION Problems To Be Solved By The Invention

An object of the present invention is to provide a color interlayer filmfor laminated glass capable of maintaining basic properties as the colorinterlayer film for laminated glass, excellent in the infrared rayshielding property, and resistant to whitening of the interlayer filmpart even in the case of moisture absorption, and laminated glass usingthe interlayer film. Another object of the present invention is toprovide a color interlayer film resistant to whitening and capable ofkeeping the original color, regardless of high transparency, andmaintaining low infrared ray transmittance, and also provide laminatedglass using the interlayer film.

MEANS FOR SOLVING THE PROBLEMS

Inventors of the present invention have made various investigations toaccomplish the above-mentioned purposes and have found that theabove-mentioned problems are all solved by adding a phosphoric acidester compound at a ratio of 5 parts by weight or less to 100 parts byweight of a polyvinyl acetal resin in a resin composition containing thepolyvinyl acetal resin, a coloring agent, and an infrared ray shieldingagent, and accordingly have completed the invention based on furtherinvestigations.

That is, the invention relates to:

-   -   (1) a color interlayer film for laminated glass, comprising a        resin composition containing a polyvinyl acetal resin, a        coloring agent, and an infrared ray shielding agent,        characterized in that the resin composition further contains a        phosphoric acid ester compound at a ratio of 5 parts by weight        or less to 100 parts by weight of the polyvinyl acetal resin;    -   (2) the color interlayer film for laminated glass according to        the above (1), wherein the phosphoric acid ester compound is a        trialkyl phosphate, a trialkoxyalkyl phosphate, a triallyl        phosphate, or an alkyl allyl phosphate;    -   (3) the color interlayer film for laminated glass according to        the above (1), wherein the phosphoric acid ester compound is        trioctyl phosphate, triisopropyl phosphate, tributoxyethyl        phosphate, tricresyl phosphate, or isodecylphenyl phosphate;    -   (4) the color interlayer film for laminated glass according to        any one of the above (1) to (3), wherein the content of the        phosphoric acid ester compound is 0.001 to 5 parts by weight to        100 parts by weight of the polyvinyl acetal resin; and    -   (5) a laminated glass, characterized in that the color        interlayer film for laminated glass according to any one of the        above (1) to (4) intervenes between at least one pair of glass        plates.

EFFECTS OF THE INVENTION

A color interlayer film for laminated glass of the present invention,and laminated glass using the film are excellent in an infrared rayshielding property and resistance against whitening while keeping basicproperties as an interlayer film for laminated glasses or as a laminatedglass. Also, the color interlayer film for laminated glass of thepresent invention and the laminated glass using the film have an effectwhich is excellent in an infrared ray shielding property and preventiveagainst whitening while durably keeping original color even if they arehighly transparent.

BEST MODES FOR CARRYING OUT THE INVENTION

The color interlayer film for laminated glass of the present inventionis a color interlayer film for laminated glass, comprising a resincomposition containing a polyvinyl acetal resin, a coloring agent, andan infrared ray shielding agent, and characterized in that the resincomposition further contains a phosphoric acid ester compound at a ratioof 5 parts by weight or less to 100 parts by weight of the polyvinylacetal resin.

The phosphoric acid ester compound to be used in the invention mayinclude, for example, a trialkyl phosphate, a trialkoxyalkyl phosphate,a triallyl phosphate, and an alkyl allyl phosphate, and here, “alkyl”means an alkyl group having 1 to 12 carbon atoms and “aryl” means anaromatic hydrocarbon group optionally substituted with a substituent(e.g. a phenyl group optionally substituted with a substituent such as alower alkyl having 1 to 4 carbon atoms and a lower alkoxy having 1 to 4carbon atoms). More specific examples of the above-mentioned phosphoricacid ester compound are trioctyl phosphate, triisopropyl phosphate,tributoxyethyl phosphate, tricresyl phosphate, and isodecylphenylphosphate.

The content of the phosphoric acid ester compound is 5 parts by weightor less, usually 0.001 to 5 parts by weight, to 100 parts by weight ofthe polyvinyl acetal resin.

The polyvinyl acetal resin to be used in the present invention ispreferably those having an average acetalization degree of 40 to 75% bymole. If it is lower than 40% by mole, the compatibility with aplasticizer is decreased and it sometimes becomes difficult to mix aplasticizer in an amount needed for surely attaining penetrationresistance. If it exceeds 75% by mole, the mechanical strength of thecolor interlayer film in the resultant laminated glass may be lowered,and it takes a long reaction time to obtain the resin, which isundesirable in terms of the process. It is more preferably 60 to 75% bymole and even more preferably 64 to 71% by mole.

The above-mentioned polyvinyl acetal resin is used preferably asplasticized polyvinyl acetal resin with a plasticizer.

With respect to the above-mentioned plasticized polyvinyl acetal resin,those which comprise 30% by mole or less of a vinyl acetate componentare preferable. If it exceeds 30% by mole, blocking is easily caused atthe time of producing the resin and it makes the production difficult.It is preferably 19% by mole or less.

The above-mentioned plasticized polyvinyl acetal resin comprises a vinylacetal component, a vinyl alcohol component, and a vinyl acetatecomponent, and each amount of these components can be measured, forexample, by “Polyvinyl Butyral Test Method”, JIS K6782 and nuclearmagnetic resonance method (NMR).

In the case where the above-mentioned polyvinyl acetal resin is otherthan polyvinyl butyral resin, the amount of the remaining vinyl acetalcomponent can be calculated by measuring each amount of the vinylalcohol component and the vinyl acetate component and subtracting theamounts of both components from 100.

The above-mentioned polyvinyl acetal resin can be produced by aconventionally known method. For example, a method may be carried out asfollows: a polyvinyl alcohol is dissolved in warm water and theresulting aqueous solution is kept at the predetermined temperature, forinstance, at 0 to 95° C., preferably 10 to 20° C. and mixed with anecessary acid catalyst and an aldehyde to promote acetalizationreaction under stirring condition. Next, the reaction temperature israised to 70° C. for aging to complete the reaction and after that,neutralization, water washing, and drying steps are carried out toobtain a powder of a polyvinyl acetal resin.

As a polyvinyl alcohol which is served as the above-mentioned rawmaterial, those having an average polymerization degree of 500 to 5000are preferable and those having an average polymerization degree of 1000to 2500 are more preferable. If the average polymerization degree islower than 500, the penetration resistance of the resultant laminatedglass may be decreased in some cases. If the average polymerizationdegree exceeds 5000, the formability of the resin film sometimes becomesdifficult and the strength of the resin film may becomes too strong.

Since it is preferable to set the amount of the vinyl acetate componentof the obtained polyvinyl acetal resin to be not higher than 30% bymole, the saponification degree of the above-mentioned polyvinyl alcoholis preferably 70% by mole or higher. If it is lower than 70% by mole,the transparency and heat resistance of the resin may be decreased andalso the reactivity may be decreased in some cases. It is morepreferably 95% by mole or higher. The average polymerization degree andsaponification degree of the above-mentioned polyvinyl alcohol can bemeasured, for example, according to “Polyvinyl Alcohol Test Method”, JISK6726. The above-mentioned aldehyde includes preferably an aldehydehaving 3 to 10 carbon atoms. If the number of carbon atoms of thealdehyde is less than 3, sufficient resin film formability cannot beobtained in some cases. If the number of carbon atoms of the aldehydeexceeds 10, the reactivity of acetalization is decreased, and blocks ofthe resin are easily formed during the reaction, resulting in a tendencyof difficult resin synthesis.

The above-mentioned aldehyde is not particularly limited and mayinclude, for example, aliphatic, aromatic, and alicyclic aldehydes suchas propionaldehyde, n-butyl aldehyde, isobutyl aldehyde, valeraldehyde,n-hexylaldehyde, 2-ethylbutyl aldehyde, n-heptyl aldehyde, n-octylaldehyde, n-nonyl aldehyde, n-decyl aldehyde, benzaldehyde, andcinnamaldehyde. Preferable aldehydes include, for example, aldehydeshaving 4 to 8 carbon atoms, such as n-butyl aldehyde, n-hexyl aldehyde,2-ethylbutyl aldehyde, and n-octyl aldehyde. Since use of n-butylaldehyde having 4 carbon atoms gives polyvinyl acetal resin whose usefor resin films gives strong adhesion and excellent weather resistance,and makes the resin production easy and therefore, n-butyl aldehyde ismore preferable. The aldehydes may be used alone, or two or more of themmay be used in combination.

As the infrared ray shielding agent to be used in the present invention,for example, metal fine particles or organic infrared ray absorbents canbe exemplified.

Examples of the above-mentioned metal fine particles include variouskinds of metals such as Sn, Ti, Si, Zn, Zr, Fe, Al, Cr, Co, Ce, In, Ni,Ag, Cu, Pt, Mn, Ta, W, V as well as Mo; various kinds of oxides such asSnO₂, TiO₂, SiO₂, ZrO₂, ZnO, Fe₂O₃, Al₂O₃, FeO, Cr₂O₃, CeO₂, In₂O₃, NiO,MnO, and CuO; nitrides such as TiN and AlN, or nitride oxides; sulfidessuch as ZnS; doped materials such as 9 wt % Sb₂O₃-SnO₂ (ATO:manufactured by Sumitomo Osaka Cement, Co., Ltd.) and F-SnO₂; andcompounded oxides such as SnO₂-10 wt % Sb₂O₃ and In₂O₃-5 wt % SnO₂ (ITO:manufactured by Mitsubishi Materials Corp.). Among them, ATO and ITO areparticularly preferable since they satisfy the requirements for use forautomobiles.

The content of the above-mentioned infrared ray shielding agent isusually 0.001 to 10 parts by weight to 100 parts by weight of thepolyvinyl acetal, although it depends on the type of the infrared rayshielding agents.

The coloring agent to be used in the present invention is notparticularly limited, and general purpose materials such as colortoners, pigments, dyes and the like may be used. For example, as thecolor toners, green, black, blue, red toners can be exemplified, andthey may be used alone or in the form of their mixture.

Also, as the pigments, inorganic pigments such as carbon black, andtitanium white; nitro- or nitroso-type pigments; azo type pigments; andphthalocyanine type pigments can be exemplified, and as the dyes, azotype dyes, anthraquinone type dyes, and phthalocyanine type dyes can beexemplified.

The content of the above-mentioned coloring agent is not particularlylimited, and may be approximately in an amount usually used for thecolor interlayer film for laminated glasses and may be properlydetermined in accordance with an aimed color.

The resin composition of the present invention may containconventionally known additives such as an ultraviolet absorbent, aplasticizer, an antioxidant, a photostabilizer, and a surfactant otherthan the above-mentioned components.

The above-mentioned ultraviolet absorbent may include, for example,benzotriazole derivatives such as2-(2′-hydroxy-5′-methylphenyl)benzotriazole,2-(2′-hydroxy-3′,5′-di-tert-butylphenyl)benzotriazole,2-(2′-hydroxy-3′-tert-butyl-5′-methylphenyl)-5-chlorobenzotriazole,2-(2′-hydroxy-3′,5′-di-tert-butylphenyl)-5-chlorobenzotriazole, and2-(2′-hydroxy-3′,5′-di-tert-amylphenyl)benzotriazole; benzophenonederivatives such as 2,4-dihydroxybenzophenone,2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone,2-hydroxy-4-dodecyloxybenzophenone,2,2′-dihydroxy-4-methoxybenzophenone,2,2′-dihydroxy-4,4′-dimethoxybenzophenone, and2-hydroxy-4-methoxy-5-sulfobenzophenone; and cyanoacrylate derivativessuch as 2-ethylhexyl-2-cyano-3,3′-diphenyl acrylate andethyl-2-cyano-3,3′-diphenyl acrylate.

As the above-mentioned plasticizer, there can be used a conventionallyknown plasticizer used for this kind of interlayer films, includingplasticizers such as organic esters (e.g. monobasic acid esters andpolybasic acid esters).

Among the above-mentioned monobasic acid esters, preferable example isglycol type esters obtained by the reaction of triethylene glycol withan organic acid such as butyric acid, isobutyric acid, caproic acid,2-ethylbutyric acid, heptanoic acid, n-octanoic acid, 2-ethylhexanoicacid, pelargonic acid (n-nonanoic acid), and decanoic acid.Additionally, esters of tetraethylene glycol or tripropylene glycol withthe above-mentioned organic acids may also be used.

Preferable examples of the above-mentioned polybasic acid esters includeesters of organic acids such as adipic acid, sebacic acid, and azelaicacid with straight chain or branched alcohols having 4 to 8 carbonatoms.

Specific examples of the above-mentioned organic ester type plasticizersinclude triethylene glycol di-2-ethylbutylate, triethylene glycoldi-2-ethylhexoate, triethylene glycol dicaprylate, triethylene glycoldi-n-octoate, triethylene glycol di-n-heptoate, and tetraethylene glycoldi-n-heptoate and further dibutyl sebacate, diocty azelate, anddibutylcarbitol adipate.

In addition, ethylene glycol di-2-ethylbutylate, 1,3-propylene glycoldi-2-ethylbutylate, 1,4-propylene glycol di-2-ethylbutylate,1,4-butylene glycol di-2-ethylbutylate, 1,2-butylene glycoldi-2-ethylenebutylate, diethylene glycol di-2-ethylbutylate, diethyleneglycol di-2-ethylhexoate, dipropylene glycol di-2-ethylbutylate,triethylene glycol di-2-ethylpentoate, tetraethylene glycoldi-2-ethylbutylate, and diethylene glycol dicaprylate can also be usedas the plasticizer.

The amount of the above-mentioned plasticizer is preferably 20 to 70parts by weight to 100 parts by weight of the polyvinyl acetal resin andmore preferably 40 to 60 parts by weight. If it is less than 20 parts byweight, the penetration resistance of the laminated glass produced maybe decreased, and if it exceeds 70 parts by weight, the plasticizer maybleed to increase the optical strain and decrease the transparency andadhesion property of the resin film in some cases.

Although the above-mentioned antioxidant is not particularly limited, itincludes, for example, a phenol type antioxidant such astert-butylhydroxytoluene (trade name: Sumilizer BHT, manufactured bySumitomo Chemical Co., Ltd.) andtetrakis-[methylene-3-(3′,5′-di-tert-butyl-4′-hydroxyphenyl)propionate]methane (Irganox 1010, manufactured by Ciba-Geigy Corp.).

As the above-mentioned photostabilizer, hindered amine type ones such asAdeka Stab LA-57 (trade name), manufactured by Asahi Denka Co., Ltd.,can be exemplified.

As the above-mentioned surfactant, for instance, sodium lauryl sulfateand alkylbenzenesulfonic acid can be exemplified.

Production Method

Although there is no particular limitation to a production method of thecolor interlayer film for laminated glass of the present invention, thecolor interlayer film can be produced by incorporating a coloring agent,an infrared ray shielding agent and a phosphoric acid ester compound,and optionally other additives into a polyvinyl acetal resin, kneadingthe mixture uniformly, and forming the kneaded product into a sheet-likeresin film by an extrusion method, a calender method, a press method, acasting method, an inflation method or the like.

In consideration of the minimum and necessary penetration resistance andweather resistance, the thickness of the entire color interlayer filmfor laminated glass of the present invention is, in its practical use,generally preferably in a range of 0.3 to 1.6 mm similar to thethickness of a common interlayer film for laminated glass.

As the glass plate to be used for the laminated glass, not only aninorganic transparent glass plate but also an organic transparent glassplate such as a polycarbonate plate and a poly(methyl methacrylate)plate may be used, though not particularly limited thereto.

The type of the above-mentioned inorganic transparent glass plate is notparticularly limited, and various kinds of inorganic glasses such asfloat plate glass, polished plate glass, figured glass, mesh-insertedplate glass, wire-inserted plate glass, heat beam-absorbing plate glass,and colored plate glass can be exemplified, and they may be used alone,or two or more of them may be used in combination. Further, an inorganictransparent glass plate and an organic transparent glass plate may belaminated. The thickness of the glass may properly be selected based onthe applications and is not particularly limited.

In order to produce the laminated glass of the present invention, aconventional method for the production of laminated glasses may beemployed. For instance, a color interlayer film made of the resin filmformed by the above-mentioned method is inserted between two transparentglass plates; the laminated product is put in a rubber bag andpreliminarily adhered at about 70 to 110° C. under reduced pressure; andthen actual adhesion is carried out at a temperature of about 120 to150° C. under a pressure of about 10 to 15 kg/cm² by using an autoclaveor a press to produce the laminated glass.

In the production method of the laminated glass, the above-mentionedcolor interlayer film obtained by forming a film of a plasticizedpolyvinyl acetal resin may be inserted between at least one pair ofglass plates, and pressure-bonded under heating at a temperature of 60to 100° C. while vacuum degassing is simultaneously carried out underreduced pressure. More specifically, the production method may becarried out by placing a laminate product of a glass plate/colorinterlayer film/glass plate in a rubber bag and pressure-bonding thelaminated product under heating at a temperature of about 60 to 100° C.under a pressure of about 1 to 10 kg/cm² for 10 to 30 minutes in, forexample, an autoclave while carrying out vacuum-degassing at about -500to −700 mmHg for simultaneous degassing and adhesion.

In this production method, the adhesion force between the colorinterlayer film and the glass can be adjusted within a proper desiredrange by, as described above, limiting the temperature within atemperature range of 60 to 100° C. when pressure-bonded under heating,and properly setting various conditions such as pressure-bondingpressure, pressure bonding duration, and pressure reduction degree atthe time of vacuum degassing within the above-mentioned ranges.

EXAMPLES

Hereinafter, the invention will be described in more detail withreference to Examples, however it is not intended that the invention belimited to the illustrated Examples.

Examples 1 to 6 and Comparative Example

A plasticizer-dispersed solution obtained by dispersing 0.28 parts byweight of tin-doped indium oxide (ITO) and 0.014 parts by weight oftrioctyl phosphate in 10 parts by weight of triethyleneglycoldiethylhexanoate (3GO); and 29 parts by weight of triethylene glycoldiethylhexanoate (3GO), separately prepared, a color toner (the kinds ofthe colors used are as described in Table), an antioxidant, and anultraviolet absorbent in each amount described in the following Table 1were added to 100 parts by weight of polyvinyl butyral resin, followedby mixing with three rolls. The resultant mixtures were formed by heatpress to obtain polyvinyl butyral resin sheets (color interlayer films)with a thickness of 0.76 mm.

TABLE 1 Infrared ray Resin Plasticizer Antioxidant UltravioletAntistatic shielding Phosphoric Color toner Example No. (PVB) (3GO)(BHT) absorbent agent agent (ITO) acid ester (remark) 1 100 39 0.4 0.40.3 0.28 0.014 0.099 (green + black) 2 100 39 0.84 0.84 0.32 0.28 0.0140.099 (green + black) 3 100 39 0.4 0.4 0.3 0.28 0.014 0.08  (black +blue + red) 4 100 39 0.84 0.84 0.32 0.28 0.014 0.08  (black + blue +red) 5 100 39 0.4 0.4 0.3 0.28 0.014 0.679 (black + blue + red) 6 100 390.84 0.84 0.32 0.28 0.014 0.679 (black + blue + red) Comparative 100 390.2 0.2 0.3 0 0 0.703 Example (black + blue + red) (remark) green meansa green toner, black means a black toner, blue means a blue toner, andred means a red toner.

Test Example

According to the following test methods, haze values of the polyvinylbutyral resin sheets obtained in the above-mentioned Examples 1 to 6 andComparative Example as they were or while being sandwiched with clearglass and at the same time light transmittance of the resin sheets weremeasured. The test results are shown in the following Tables 2 and 3.

Test Method

1. Measurement of the haze value:

The measurement was carried out by using an integrating turbidimeterafter 24 hours from the time when color interlayer films were immersedin water at 23° C. as they were or while being sandwiched with clearglass.

2. Measurement of the light transmittance:

The following measurement and evaluation were carried out for theresultant laminated glasses.

The transmittance was measured for the light with wavelength in a rangeof 340 to 2100 nm by a spectrophotometer (Self-recording type 340 Model,manufactured by Hitachi Ltd.) and visible light transmittance, sunlighttransmittance Ts 2100, color tone and the like were measured accordingto JIS R3106.

TABLE 2 Haze value (AVE) Heat shielding property Ex- Sandwiched T T Yvalue ample Film by clear Ts2100 (1550 nm) (850 nm) of light No. aloneglass (%) (%) (%) A 1 42.9 31.3 61.5 14.2 69.0 79.0 2 38.0 35.0 60.412.0 68.4 78.3 3 39.0 30.8 57.6 12.5 67.2 72.8 4 39.9 27.3 57.0 12.166.9 72.4 5 41.6 33.6 26.6 10.0 39.4 20.8 6 45.7 36.2 26.1 9.5 39.1 20.3Com- 89.6 88.9 34.7 57.5 42.8 21.6 parative Ex- ample

TABLE 3 Color of the transmitted light Color of the reflected light L*a* b* Reflectance L* a* b* (transmittance (transmittance (transmittanceY1 (reflectance (reflectance (reflectance Example at 2° at 2° at 2° (at2° light at 2° at 2° at 2° No. of light A) of light A) of light A) C) oflight A) of light A) of light A) 1 91.2 −1.7 2.4 −3.7 33.9 −1.3 −0.8 290.9 −1.8 2.9 −2.6 33.5 −1.3 −0.5 3 88.4 −3.4 1.3 −6.5 32.6 −2.5 −1.2 488.2 −3.5 1.6 −6.5 32.9 −2.5 −1.2 5 52.7 −0.9 −5.6 0.1 28.3 1.2 −0.3 652.2 −0.8 −5.4 0.0 28.2 1.1 −0.3 Comparative 53.6 −2.6 −7.3 −2.8 27.60.5 −0.7 Example

As can be understood from the above Tables 2 and 3, even if the colorinterlayer films of the present invention are color interlayer filmshaving a light transmittance exceeding 50%, they are remarkablyexcellent in the haze values as compared with that of the comparativefilm, and preventive against whitening. Also, it can be understood thateven if the color interlayer films of the present invention are colorinterlayer films having a light transmittance exceeding 50%, they cankeep low infrared ray transmittance since infrared rays are remarkablyshielded by the infrared ray shielding agent.

INDUSTRIAL APPLICABILITY

The laminate glass produced by using the color interlayer film forlaminated glass in accordance with the present invention is useful forwindow glass of automobiles and buildings.

1. A color interlayer film for laminated glass, comprising a resincomposition containing a polyvinyl acetal resin, a coloring agent, andan infrared ray shielding agent, characterized in that the resincomposition further contains a phosphoric acid ester compound at a ratioof 5 parts by weight or less to 100 parts by weight of the polyvinylacetal resin.
 2. The color interlayer film for laminated glass accordingto claim 1, wherein the phosphoric acid ester compound is a trialkylphosphate, a trialkoxyalkyl phosphate, a triaryl phosphate, or an alkylaryl phosphate.
 3. The color interlayer film for laminated glassaccording to claim 1, wherein the phosphoric acid ester compound istrioctyl phosphate, triisopropyl phosphate, tributoxyethyl phosphate,tricresyl phosphate, or isodecylphenyl phosphate.
 4. The colorinterlayer film for laminated glass according to claim 1, wherein thecontent of the phosphoric acid ester compound is 0.001 to 5 parts byweight to 100 parts by weight of the polyvinyl acetal resin.
 5. Alaminated glass, characterized in that the color interlayer film forlaminated glass according to claim 1 intervenes between at least onepair of glass plates.
 6. The color interlayer film for laminated glassaccording to claim 2, wherein the content of the phosphoric acid estercompound is 0.001 to 5 parts by weight to 100 parts by weight of thepolyvinyl acetal resin.
 7. The color interlayer film for laminated glassaccording to claim 3, wherein the content of the phosphoric acid estercompound is 0.001 to 5 parts by weight to 100 parts by weight of thepolyvinyl acetal resin.
 8. A laminated glass, characterized in that thecolor interlayer film for laminated glass according to claim 2intervenes between at least one pair of glass plates.
 9. A laminatedglass, characterized in that the color interlayer film for laminatedglass according to claim 3 intervenes between at least one pair of glassplates.
 10. A laminated glass, characterized in that the colorinterlayer film for laminated glass according to claim 4 intervenesbetween at least one pair of glass plates.